Safety-razor-stropping device.



APPLICATION FILED guy 26, 1-911;

Patented July 2, 1912.

INVENTORS I AITTORIVEY.

county sf W be a n We Con-"MAN f the wthe eisey, in

have invented certain I Dev gaieigf-i azoiw $013 ices, Li? "whichlongitudinally back and. forth speciiica-tinn.

the folidwing is :a-elstes 0 that class of invention u safety razorstrapping devicesv which are adapted to be slid along a stamp 01 strapby means of s handle, the safe/t razor lolscle being held in frictionsconteci with the strap or strap by fi'icaion of sire-* device there"*nri automatically arsed. the

device e abjects iiiveiit' w' fQ-TCO- wide stray/ ng ileviee eif iselass in an l) is to llG sherpei 2:1 is held quely 1 1e strep 0isteep;sml i e sin l is lest-meiion 01" leoseness eliie "he helelei: besiti'vely pimtecl be'tli its eimosite-e 59 "that can beam msveizien 'sthere J1 with respee'; bliss meg except Z110V6Z1Z-3X}i i) do bynivei-ing" seidhoider in inclined p9 1 i; he ""lgllli 'lj lRLRSVGYSi?die strep, an m obize i otli nenlimitages and resuiis as be' sz-e ightout in the following description: Ref-e1 e w the in which ie'miinemls m5re ciiie the peri s tli euglioue the .figiises, Figurei f pl'zi' ew viesin use 11 0011 lines. th I lieldez'g indiseveral.

3 1S end I ion,

swimgime uprightpesi'eion so the; s blse may be readily placed inposition; F is a perspective iew of the body 01."

frame With its handle, ancl gig. 5 is 21 detail cross section an lineA-A Fig. 1 looking-in the direction indicated by the arrow In said.imwiiigs, 1 indicates the befiy oriram'e M30111: improved sti'oppiiigdevice, which boey may be swamped from Sl79ll metal the like "133dafierwnr lieutirate she shape, assliewzi in 4i. beFy or frame camp s 110 opposilie is rive'ecl 0i" eilierwise seciirefl.

s sicle @GX'iliGBS il xiilptlaci ie be at the ep e strap 6, see 1 illthe eress-pleee meme. 1h

the hand e ciepeiicliiig therefrom in eeiwenient pesition to slide thelevies imagitudinelly the six-0 3..

At the emls 01% t are rollers '2, 7 anti 8, 8 lllie i'eiieirs of eachpair being plecefi one'abeve the ether and allowingenougli space betweenfor finest-p 6, to be tlireedetl between the rollers 'Z, 7 at one em cfthe frame encl (mt tlirough the 001- resgieiislingj mllers 8 8 at theogposi'be i of its encls, each sicle L 3 of the tire e lies aniigpwerdiy gii'ejecti'ng' (H? one of seicl sets as 9, is longer lesser ns "forming bearings er ends 0. 3

as upper 1i Yer K'Gilfif 12., 'iQOLll excemliiig; ti-ensl he I 'ne 1.,The l ioles bear is; 13 1' roller 12- ere at the same iifiiiifil an 231%ears 9, 10., as tlie ollei 1% eme .l. O1 parallel roller lies above 'tlstrep 6, and below said strep, OEJPGSlLE.Sl(lS of iherollei l2, stileelleis 14:, "1:01:11-

s-ttheir emls in l v t e side pieces 3 of the frame. last-mentionedsellers 1 1, 14%. are l'LU-i? low eiiou with zespeet t0 the roller 12 sestrep =3 stmighten @1122 between iliem, but the, Tellers always heldstrep with a bend in it\ sliewii, 50 that there s friciienelerigsgerelleflQ. Said be veiiezli by is thelisncl it e bales or 15 5 mythe semi il 'a-re eliili ilerent lmlf llls on Sine ears 3?, 10, so thatsaid shaft is inclined with respect to the plane of the frame 1, mi hasone end farther mmy from the strep than the other end. At the same time;it will be noted, the shaft 11 iensien e.

is in the same plane with the roller 12, and

this plane preferably is Qerpendicularly transverse of the frameil. Theroller 12 X mi? 11 are eenneelzetletthe low end of "ilie m is? by mesgise1": p'iniens or gears 17, 18, $0 flie drawing the strapping devicealong the strap will tend who 'tm'n the said e the (Erection of slirlingshaft 1.1, aim the s zrogpmg is re ersed the shaft The shaft 11 carriesthe blade holder 19, which holder may consist of a piece of sheetmetalwrapped around the said shaft and .\-.Qflll0(l together at one sidethereof, as at 20. so to provide resilient clamping jaws :12, to receivethe rarer blade 22 between themselves, as has in general been commonheretofore. E other suitable detail conn of blade hold r can beemployed, the feature of our invention next to he described can beapplied. The edge the jaws of said blade holder, which receive ihe blade22, is: inclined. with respect to the shaft 11,-as clearly shown in thedrawing, so that the blade while being sharpened lies slantingly across-the st-rop, or in oblique position thereon. The wide end of the bladeholder is at the high end of the shaft- 11, and it the inclined posilionof said shaft which. has been described that insures the edge of therazor blade lying fiat upon the strep, even though the blade holder iswider at one end than the other. The angle of inclination of the shaft11 bears such a relation to the angle upon which the edge of the bladeholder extends obliquely across the strep, as that the edge will lieflat upon the strep.

The oairs of upper and lower end rollers 7, 7, 8, 8 which are mounted inopposite ends of the frame 1 adjacent to the edge of the blade to besharpened, hold the strep flat and -tmooth for said blade and keep thestropping device in proper position.thereon. Preferably these rollersare inclined, as shown in the drawings, so as to be parallel to theblade being sharpened, and therefore one side piece, as 3, of the frame1, is longer than the other side piece 2. We do not wish to confineourselves to this oblique position of the end rollers 7, 8 through whichthe strep passes, however, as they may under some conditions extend atright angles to the strop. Furthermore, it may be possible sometimes touse simple bars, instead of rollers 7, 8, without causing unduefriction.

The operation of the device-is as follows:

- The strop is threaded between the rollcrs 7,

7. at one end of the fame 1, over the supporting roller 14, under theccnter roller 19, over the other supporting roller lel, and thence outthrough the other end rollers 8, of the device. llhc blade holderis thenswung up, as shown in Fig. 3, and the blade to be sharpened or stroppedis inserted therein with its outer edge parallel to the edge. ofv saidblade holder. The attaching end of the strop, not shown, is hooked overany suitable support, "while its opposite end, likewise not shown, isheld in one hand. The other hand grips the handle 5 of the stroppingdevice and rcciprocatcs said device back and forth along the strep. Itwill be noted that, since the center roller 12 holds the strop downbetween the two adjacent rollers 1a, 1 1, the more pull exerted by thehand upon the strop' the more tendency there will be toturn the roller12. This tendency is transmitted through the gears 17. 18 to the shaft11 whichcarries' the blade holder 19, and obviously if the edge of saidholderis not already in contact with the strep 6, it will be immediatelybroughtin contact therewith on the side of the shaft 11 toward the rearof the moving device. When the blade is resting upon the strep, theroller 12 cannotturn, and will,slip on the strop, but obviously thepressure of the blade upon the strop can be regulated by the tension towhich the strep is drawn. The blade tlrus-qoresses upon the strop forthe entire length of travel of the device, and is automatically reversedby the blade holder as the direction of movement of the strepping deviceis reversed at the ends of its travel, the edge ofthe blade always lyingobliquely of the strop. I 5

. It will be noted that by our; improved con struction the transversemembers 14 1d are beneath the strep where they are not only out of theway of the blade holder and blade, but also serve to hold the strop'upagainst said blade. Said transverse members can thus be placed close tothe middle roller 12, so that the blade engages the strepv outside saidmembers and the support they give to it. Furthermore, by employing thecndx uides 0r rollers 7, 7 and 8, 8, the strop is supported or upheld onboth sides of the point of engagement of the blade with it.

Having thus described the invention, what we claim is:

1. A safety razor stropping device, comprising a frame adapted to slidelongitudinally of a strop, a roller in said fame, means for forcing thestrep into frictional engagement with the roller, a blade holder pivotedon said frame with the line of 'iivoting transverse tothe strep when thedevice is in use and at an angle to the plane of the strop, and meansfor transmitting rotary movement to said blade holder from. said roller.

2. safety razor stroppi'ng device, comprising a frame adapted to slidelongitudinally of a strop, a rollerin said frame,

means for forcing the stro-p into frictional engagen'rent with theroller, a blade holder pivoted on said frame with the line of pivotingtransverse to [he strop whcn'thc device is in use and at 'an angle tothe plane of tho strep, said blade-holder having its free bladereceiving edge at an angle to the line of pivoting of said blade holder,and means for transn'iitting rotary movement to said blade holder fromsaid roller.

3. ii. safety razor stropping device, comprising aframe adapted to slidelongitudinally of a strep, a roller in said frame, nit-ans for;t'oroing' the strop into frictional en ageuient with the roller, :1blade holder pivoted at the ends of one of its edges in lined positionon the frame with said edge at an angle to the plane of the strop when'lev e in use and having its other or solving edge at an angle. to saidl edge, and means for transnovement to said blade d roller.

'tut razor stropping device. comtwine ,nlaptecl to slide longitudi- 2strep, a roller in said frame, ircing the strep into frictional 1migag'ement nvoted upon 'iilrihe roller, a blade holder frame in. itfixed line extending the frame at right angles thereto and having abladereeeiving edge at an angle to said line of pivoting, and

me-ins for transmitting rotary movement to said blade bolder from saidroller.

I). A safety razor stropping device, comprising :1 frame adapted toslide longitudinally of a strep, a roller in said frame, means for torchg the strop into friotiona engagei'nent vith the roller, a blade holderpivoted in said frame upon a fixed line extending ac the strep atsubstantially right angles thereto and at an angle to the plane thercotwhen the device is in use, and means for transmitting rotary movement tosaid blade holder from said roller.

6. A safety razor stroppiug device, comprising ov frame adapted to slidelongitndinally ot a strop, a roller in said frame, means for forcing thestrop into frictional engagement with the roller, 2. blade holderpivoted on said frame in a transverse line at on angle to the plane ofthe frame and having its free receiving edge at an angle to said line ofpivoting, means for transmitting rotary movement to said blade holdertrom said roller, and guides for the strop onsaid frau'iesubstantiallyparallel to said. edge of the blade holder.

7. A safety razor stroppi-ng device, comprising a frame adapted to slidelongitudinally ot the strop, a roller in said frame,

-means for forcing the strop into frictional engagement with saidroller, a blade holder pivoted in said frame and having means forholding ablade at an angle to the line of pivoting oi the blade holder,said line of pivoting being at such an angle to the plane of the stropthat the blade holding means will lie in said plane, and means fortransmitting rotary movement to said blade holder from the said roller.

8. In a safety razor stropping device, the combination ot a framecomprising opposite parallel sides, a cross-piece between said sides anda handle whereby said frame can be reciprocated in sliding engagementwith a strop, guides for the strop at botli'ends of said frame, a rollermounted in said frame intermediate of said guides, means tor .t'orcingthe strep into frictional engagement frame in a fixed line transverselythereof, a, blade holder on said shaft adapted to hold the blade withits edge at an angle to said shaft, said shaft being at such an angle tothe plane of the strop that the edge of a blade in said blade holderwill lie flat upon the strep, and means for transmitting rotary motionfrom said roller to said shaft.

9. In a safety razor stropping device, a frame comprising oppositeparallel sides, a cross-piece between said sides, and ahandle wherebysaid frame can be reeiprocated longitudinally of a strop, ripper andlower uides for the strop at both ends of said frame, a rollerintermediate of said guides, transverse members on opposite sides ofsaid roller adapted to force the shop into frictional engagement withsaid roller, ablade holder pivoted above said roller in a fixed line atan angle to said roller, both said line of pivoting and the roller beingin a plane which intersects the plane of the frame at substantiallyright angles to the length thereof, and means for transmitting rotarymotion from said roller to said blade holder.

CLYDE D. COFFMAN. CLIFFORD B. COFFMAN.

in the presence (if-- L. C. llon'roiv, Conn 1-11! is ZABRISKIE.

with said roller, a shaft journaled in said

